VD/SV-HRL

The PROTEGO® Flame Arrester Unit is designed to achieve minimum pressure drop with maximum safety. The PROTEGO® VD/SV-HRL device is available for substances of explosion group IIA (NEC group D MESG > 0.9 mm). When the set pressure is reached, the valve starts to open and reaches full lift Course Lift is the actual travel of the valve pallet from the main valve out of the closed position. within 10% overpressure. This unique 10% technology enables a set pressure that is only 10% below the maximum allowable working pressure (MAWP) or maximum allowable working vacuum (MAWV) of the tank. After years of development, this typical opening characteristic of a safety relief valve is now also available for the low pressure range.

If the set pressure is exceeded, explosive gas/product vapor/air mixtures are released into the atmosphere. If this mixture ignites, the integrated PROTEGO® Flame Arrester Unit (3) revents flame transmission into the tank. If additional mixture continues to flow and stabilized occurs, the integrated Flame Arrester prevents flashback as a result of endurance burning. The valve is protected and also fulfils its function under thesesevere conditions. The spring Ressort A spring is a spiral of wire which returns to its original shape after it is pressed or pulled. -loaded weather hood Capot de protection contre les intempéries A weather hood is a cover to protect the internal components of a device from environmental influences. opens as soon as the melting element Elément fusible The melting element is a component that consists of a housing with a lower and upper part. (4) melts.